3.55MM CS X 28MM ID BLACK BUNA 70D

The H3.55X28 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 28 mm (1.102 in), a cross section of 3.55 mm (0.14 in), and an outside diameter of 35.1 mm (1.38 in). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists many alcohols, propane and butane, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

Common environments for this compound include hydraulic and pneumatic systems, agricultural equipment, and automotive.

This item is sold individually under part number H3.55X28. Unit weight is approximately 1.2702 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.